Additive delivery systems and containers

ABSTRACT

A compact filtering and additive delivery system which is readily adaptable to a portable container, such as a sports bottle, and receives a modular additive container for the metered delivery of additive, such as flavor concentrate, to a stream of base liquid as the base liquid is drawn or dispensed from the container. The modular additive container configuration on the delivery system allows a consumer/user to experience different additives, such as different flavors or supplement compositions, for a given supply of base liquid, such as water, stored in the container. The system may be readily used with off-the-shelf containers, such as disposable water bottles. An additive container configuration provides modular additive delivery system as described herein.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation and claims the priority benefit ofU.S. patent application Ser. No. 17/539,833, filed on Dec. 1, 2021. Thisapplication is a continuation and claims the priority benefit of U.S.patent application Ser. No. 15/791,348, filed on Oct. 23, 2017, which isa continuation and claims the priority benefit of U.S. patentapplication Ser. No. 14/181,354, filed on Feb. 14, 2014, of the sametitle, now U.S. Pat. No. 9,795,242, which claims the priority benefit ofU.S. Provisional Patent Application Ser. No. 61/764,861, titled “BOTTLEWITH REMOVABLE FLAVOR CARTRIDGE IN WHICH FLAVOR CONCENTRATE MIXES WITHWATER AS USER DRINKS,” filed on Feb. 14, 2013. The disclosures andsubject matter of all of the above-described applications isincorporated by reference herein in its entirety.

BACKGROUND 1. Technical Field

The disclosure relates to dispensing and delivery systems for beveragesand other products. More specifically, the disclosure relates todispensing and delivery systems for providing an additive, such asflavoring or supplements, to a base liquid, such as water, as the baseliquid is dispensed from a container. The disclosure also relates tocontainers for containing and storing an additive to be used in additivedelivery systems.

2. Prior Art

The prior art includes various devices for providing additives to a baseliquid. Such devices include pre-mix systems, such as those exemplifiedin U.S. Pat. No. 7,306,117, in which a predetermined amount of additiveis dispensed into a base liquid within the container and mixed therewithprior to consumption.

Prior art systems also include additive delivery systems in which anadditive is dispensed as a base fluid is dispensed from a container.Such delivery systems are exemplified by U.S. Pat. No. 8,230,777, whichdescribes a dispensing system in which a base liquid flows through asupplement area containing solid supplements, and U.S. Pat. No.8,413,844, which describes a water dispenser (pitcher) having a filterand an additive chamber in which the additive is dispensed as water ispoured from the dispenser.

Such prior art systems, however, suffer from the drawbacks of requiringrather elaborate and relatively expensive dispensing systems and fail tocombine filtration and additive delivery functionality in a manner thatis readily adapted to portable, compact, portable containers, such assports bottles. There is thus a need for additive delivery systems andadditive containers that are readily adaptable to portable base liquidcontainers and which address the aforementioned and other needs in theart.

SUMMARY OF THE INVENTION

One aspect of the invention provides a compact filtering and additivedelivery system, which is readily adaptable to a portable container,such as a sports bottle. The additive delivery system providesfiltration and additive delivery to a base liquid while maintaining agenerally consistent flow direction of the base liquid. The additivedelivery system may receive a modular additive container selected by theuser and provides for the metered delivery of additive, such as flavorconcentrate, to a stream of base liquid as the base liquid is drawn ordispensed from the bottle. The modular additive container configurationon the delivery system allows a consumer/user to experience differentadditives, such as different flavors or supplement compositions, for agiven supply of base liquid, such as water, stored in the container.

Another aspect of the invention provides a compact filtering andadditive delivery system that may be used with off-the-shelf containers,such as disposable water bottles.

Yet another aspect of the invention provides a container configurationthat is suitable for a modular additive delivery system as describedherein.

Yet another aspect of the invention provides for uniform mixing ofadditive to a base liquid as the mixture is consumed, as well as asubstantially uni-directional flow of base liquid and mixedadditive/base liquid composition from the container.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and other attendant advantages and features of the inventionwill be apparent from the following detailed description together withthe accompanying drawings, in which like reference numerals representlike elements throughout. It will be understood that the description andembodiments are intended as illustrative examples and are not intendedto be limiting to the scope of invention, which is set forth in theclaims appended hereto.

FIG. 1 is an exploded isometric view of an additive delivery system,combined with a sports bottle and filtration system according to anaspect of the invention;

FIG. 2 is a detailed exploded isometric view of an additive deliverysystem according to an aspect of the invention;

FIG. 3 is a cross-sectional exploded view of the additive deliverysystem of FIG. 2;

FIG. 4 is an isometric view of an additive container according to anaspect of the invention;

FIG. 5 is a cross-sectional view of an assembled additive deliverysystem according to an aspect of the invention;

FIG. 6 is a cross-sectional view showing flow paths of an additivedelivery system according to an aspect of the invention.

DETAILED DESCRIPTION

Referring to FIG. 1, an additive delivery system 100 according to anaspect of the invention includes an upper cap assembly 120 and a lowercap assembly 140, in combination with a sports bottle 10. Sports bottle10 may include an inner volume for containing a base fluid, such aswater, and a threaded mouth 12 for receiving and sealingly engaging thelower cap assembly 140. As will be described in more detail below, uppercap assembly 120 and lower cap assembly 140 cooperate to house aremovable additive module 200.

Referring additionally to FIG. 2, upper cap assembly 120 may include aspout 121 and a re-sealable spout closure 122 that cooperates therewithin a known manner. Upper cap assembly may also include a cap portion 123having threaded interior wall 125 and an additive module enclosing wall127 defining an additive module receiving space 128 for receivingadditive module 200.

Lower cap assembly 140 may include a lower cap 141 having a containerengaging female threaded portion 143 and an outer surface with grippingrecesses formed therein. A lower additive module enclosure 150cooperates with the lower cap 141 and upper cap assembly 120 to houseand enclose additive module 200, as will be described below. Lower capassembly 140 may include a filter assembly 170, which houses a filterfor filtering the base liquid. A delivery tube 155 extends to the bottomof the base liquid container and provides for the travel of base liquidthrough the filter assembly 170, lower cap assembly 140, additive module200 and, ultimately, to spout 121, as will be described in more detailbelow.

Referring additionally to the cross-sectional exploded view in FIG. 3,the additive module enclosing wall 127 of upper cap assembly 120 mayinclude a retaining lip formed therein for engaging a retaining groove214 on additive module 200. Lower cap assembly 140 may include an uppercap engaging male threaded portion 142 for engaging the female threads125 on the upper cap 123. As will be recognized, this configurationallows easy removal and replacement of the additive module by theconsumer as the upper cap assembly 120 may be unscrewed and removed withthe additive module 200 remaining secured on the upper cap assembly 120by way of the retaining lip 129 and retaining groove 214, which providea snap fitting of the additive module 200 to the upper cap assembly. Inaddition, during removal of upper cap assembly 120, the lower cap 141may remain secure on the container, preventing contamination or spillageof the base liquid.

According to an aspect of the invention, for safety and sanitarypurposes, the additive module 200 may be provided with a transparentsafety enclosure cap, which may engage the cap threads 125, and enclosedthe additive module 200. In this configuration, the spout 121, spoutclosure 122 and safety enclosure cap (and thus the additive module, snapfit within the cap) may be sealed within a frangible thermoplasticmembrane for consumer safety and product freshness. The transparentsafety cap allows consumers to view the details/branding of the additivemodule before purchase, for example.

Lower cap 141 may also be provided with an annular wall 144 for engagingand fitting within a correspondingly-shaped upper annular wall 151 onthe lower additive module enclosure assembly 150. Annular wall 144 maybe provided with a retaining groove 145 for receiving a cooperatingretaining lip 154 formed on the interior of upper annular wall 151 ofthe lower additive module enclosure assembly 150. A lower annular wall152 and bottom wall 153 define a space for receiving a lower portion ofthe additive module 200. One or more additive module membrane piercingprojections 180 may extend upward from the bottom wall 153 to pierce afrangible membrane 212.

Tube 155 extends upward through the lower module enclosure assembly 150to permit flow of the base liquid. One or more metering ports 157 may beformed in the tube 155 near the bottom wall 153 to permit flow ofadditive concentrate from the interior of lower additive moduleenclosure 150 to the interior of tube 155 by venturi effect as the baseliquid is drawn through tube 155. One or more mixing projections 156 mayextend within the interior of tube 156 to induce turbulent flow andthereby mix the additive concentrate with the base fluid.

Filter assembly 170 may include a filter housing 172, which is snappedin place on a corresponding filter housing top 174 using a lip andgroove retainer. A one-way check or flapper valve 176 formed of siliconerubber may be provided at the inlet of tube 155 from the interior offilter housing 172 to prevent backflow of the base fluid into the filterhousing 172. An active carbon filter element (not shown in FIG. 3) maybe provided on the interior of filter housing 172, as will be describedin more detail below.

Referring additionally to FIG. 4, an additive module 200 according toaspects of the invention may include a generally cylindrical shapehaving an outer wall 204 provided with a retaining groove 214 formedtherein and extending to a top wall 205 having a conical sealing surface208. Conical surface 208 is adapted to sealingly engage acorrespondingly shaped flexible seal 130 (FIG. 3), which may be made ofsilicone rubber or other material, and provided in upper cap assembly120. An interior annular wall 206 defines, with upper wall 205 and outerwall 204, an interior additive containing space 210 for containing anadditive, such as flavor or supplement concentrate. A frangible lowermembrane 212, which may be made of foil or other material, forms a lowerwall to contain and seal the additive within the module. As will berecognized, the module configuration provides for a consumer to carryand preserve a number of different additives for use with the additivedelivery system and a single supply of base liquid in a container, suchas a sports bottle.

FIG. 5 illustrates a cross-section of an assembled additive deliverysystem according to an aspect of the invention. Spout closure 122 isshown in a closed position. Upper cap 123 is shown in an engagedposition (i.e., screwed on) on the male threaded portion 142 of thelower cap 141, with the additive module enclosing wall 127 of the uppercap assembly 120 extending downward into the annular opening of thelower cap 141 and securing the additive module 200 therein. The upperannular wall 151 of lower additive enclosure assembly 150 engages themodule holder receiving wall 144 of the lower cap assembly 140 via lip154 and groove 145 to provide a snap fitting. Upper cap assembly 120,lower cap assembly 140 and lower additive module enclosure assemblythereby cooperate to provide a sealed containing space for the additivemodule 200.

Tube 155 extends upward within the inner tube formed by inner wall 206of additive module 200. The conical sealing surface 208 is engaged by acorrespondingly shaped silicone seal 130 secured within the upper capassembly 120. In this position, the frangible membrane 212 of additivemodule 200 would be pierced or ruptured by piercing projections 180(FIG. 3) and additive concentrate stored within additive module 200would flow into the space 158. FIG. 5 also shows a cylindrical activecarbon filter element 175 housed within the filter housing 172 to filterthe base fluid.

Referring additionally to FIG. 6, the base fluid is filtered as it flowsfrom the lower portion of tube 155 to an interior space 178 defined byfilter element 172, through the check valve 160, and upward into theupper portion of tube 155. Owing to a venturi effect, additiveconcentrate, represented by arrows “A” is drawn from the space 158,through metering ports 157 and into the interior of tube 155 whereadditive is mixed with the base fluid. Applicants have discovered thatmetering ports having a diameter of approximately 0.03 inches providefor suitable metering of additive liquid, while permitting the retention(non-leakage) of additive liquid from the additive module when flow ofthe base liquid is not occurring. As will be recognized, the diameter ofmetering ports may be varied depending on the viscosity of the additiveliquid and other parameters such that flow occurs when needed but notwhen the base liquid is not flowing in the delivery tube. Mixingprojection 156 enhances the mixing and uniform dilution of the additivewithin the base fluid. The mixed additive and base fluid compositioncontinues up the tube 155 through the spout

As will be recognized, the flow of fluid through the system may befacilitated by suction provided by the consumer or by the squeezing ofthe container, which may be made of a suitably flexible material, or byboth. As will also be recognized, flow from the base liquid container,through the filter assembly, delivery tube and additive module issubstantially in a single, linear direction, without diversion, therebyproviding for efficient flow of base liquid and mixedadditive/base-liquid composition from the container and providing aconfiguration that is particularly adaptable to a sports bottle or othercompact, portable, handheld container.

As will also be recognized, the additive delivery system may be usedwith standard, disposable water or beverage bottles through suitableadaptation of the fastening implements on the lower cap assembly.

As will also be recognized, suitable thermoplastic polymers may be usedto form the various aforementioned elements, including polyethyleneterepthalate (PET), polycarbonate, high-density polyethylene (HDPE) andothers.

It should be understood that implementation of other variations andmodifications of the invention in its various aspects may be readilyapparent to those of ordinary skill in the art, and that the inventionis not limited by the specific embodiments described herein. It istherefore contemplated to cover, by the present invention any and allmodifications, variations or equivalents that fall within the spirit andscope of the claims that follow.

What is claimed is:
 1. An additive delivery system comprising: a baseliquid container having an inner volume to hold a base liquid, a bottomand a threaded mouth; an additive reservoir including at least one walldefining a space holding a liquid additive and an outlet from which theliquid additive exits the additive reservoir; a cap assembly configuredto threadedly engage with the threaded mouth, the cap assembly having abottom, a top, a spout at the top of the cap assembly and configured formovement between open and closed positions to control flow of liquidfrom the spout, at least one wall that defines an additive reservoircavity to receive the additive reservoir, and a metering port configuredto receive liquid additive from the outlet of the additive reservoir;and a base liquid flowpath extending through the cap assembly to thespout, the base liquid flowpath fluidly coupled to receive liquidadditive from the metering port at a mixing area to mix the liquidadditive with base liquid, and including a delivery tube that extendsfrom a lower end positioned near the bottom of the base liquid containerto an upper end engaged with the cap assembly, and a one-way valve inthe base liquid flowpath upstream of the mixing area that preventsbackflow of base liquid into the base liquid container.
 2. The system ofclaim 1, wherein the additive reservoir cavity includes a projectionconfigured to engage with and open the outlet of the additive reservoirto allow the liquid additive to exit the additive reservoir.
 3. Thesystem of claim 1, wherein the additive reservoir includes an outletfrom which the liquid additive exits the additive reservoir.
 4. Thesystem of claim 3, further comprising an additive flowpath configured toreceive liquid additive from the outlet of the additive reservoir andincluding a metering port through which the liquid additive flows. 5.The system of claim 1, wherein the base liquid flowpath, the capassembly and the additive reservoir are configured such that suctionapplied to the spout while the container is positioned below the spoutcauses base liquid to flow upwardly against gravity through the baseliquid flowpath and to the spout and causes liquid additive to flowdownwardly with gravity from the additive reservoir and to the meteringport.
 6. The system of claim 1, wherein the additive reservoir and theadditive reservoir cavity are configured such that inserting theadditive reservoir into the additive reservoir cavity opens the outletof the additive reservoir.
 7. The system of claim 1, wherein theadditive reservoir and the additive reservoir cavity are configured suchthat the additive reservoir engages the cap assembly with a snap fit. 8.The system of claim 1, wherein the base liquid flowpath includes amixing projection at the mixing area.
 9. The system of claim 3, whereinthe outlet of the additive reservoir includes a flexible element. 10.The system of claim 4, wherein the base liquid flowpath and the additiveflowpath are configured such that liquid additive flows into the mixingarea in a direction perpendicular to flow of the base liquid through thebase liquid flow passage.
 11. The system of claim 1, wherein theadditive reservoir is configured such that the liquid additive flows bygravity to the metering port.
 12. The system of claim 1, wherein the atleast one wall of the additive reservoir is non-collapsible.
 13. Thesystem of claim 1, wherein the cap assembly includes a first portionthat is configured to threadedly engage with the base liquid containerand the additive reservoir is removable from the first portion of thecap assembly.
 14. The system of claim 13, wherein the additive reservoiris removable from the first portion while the first portion is engagedwith the base liquid container.
 15. The system of claim 1, wherein theadditive reservoir is separable from the metering port.